The bloody disaster refers to the old superstition that disasters caused by swords and weapons will cause bloodshed or death to those who respond. Also known as "bloody disaster" and "bloody light". In the Bazi, bloody disasters generally refer to car accidents, stab wounds, gunshot wounds, trauma, surgery, and all bloody personal accidents caused by Tai Sui's opposition to the Sun Lord or the use of gods.
Source
Wu Yong said: ‘It is my fate that there will be a bloody disaster within a hundred days! Household property cannot be kept, and will be killed by the sword. ’ Chapter 61 of "Water Margin"
You, old man, will be destined to have a bloody disaster this year. You should be careful not to see any cries in July and August. "Jin Ping Mei Ci Hua" Chapter 46
The beating will make you cry, the wet meat will be accompanied by dry firewood. It's also you, the old official, who suffered the bloody disaster together. "Tiger Head Brand" by Li Zhifu of the Yuan Dynasty
In the fourth chapter, this little guy has suffered a lot of blood this year. I whipped him to pieces. The second chapter of "Little Yuchi" by Anonymous Yuan
If you still don't understand when you are about to see blood, I will go to the King of Hell now and hand over your original body to him.
"Selected Chinese Folk Stories: "Old Buddha Fan" Becomes Master"